#screen {
    width: 400px;
    height: 200px;
    font-size: 20px;
    background-color: gray;
    color: white;
    border-radius: 10px;

    text-align: center;
    line-height: 100px;
}

#match-button {
    width: 400px;
    height: 50px;
    font-size: 20px;
    color: white;
    background-color: orange;
    border: none;
    outline: none;
    border-radius: 10px;

    text-align: center;
    line-height: 50px;
    margin-top: 20px;
}

#match-button:active {
    background-color: gray;
}

#match-button:hover { /* 当鼠标悬停在按钮上时的样式 */
    background-color: #0056b3; /* 暗色背景 */
    box-shadow: 0 4px 8px rgba(0,0,0,0.3); /* 更大的阴影效果 */
}